mirror of
https://github.com/kovidgoyal/calibre.git
synced 2025-07-08 02:34:06 -04:00
Implement live loading of common amazon code
This commit is contained in:
Kovid Goyal
parent
61b24aef56
commit
c98ad9a233
@ -2,13 +2,32 @@
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# vim:fileencoding=utf-8
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# License: GPL v3 Copyright: 2022, Kovid Goyal <kovid at kovidgoyal.net>
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from lxml import etree, html
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from qt.core import QUrl
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from urllib.parse import urlencode
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from threading import Lock
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from time import monotonic
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from calibre.gui2 import open_url
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from calibre.gui2.store.search_result import SearchResult
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from calibre.scraper.simple import read_url
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lock = Lock()
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cached_mod = None
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cached_time = -10000000
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def live_module():
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global cached_time, cached_mod
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with lock:
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now = monotonic()
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if now - cached_time > 3600:
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cached_mod = None
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if cached_mod is None:
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from calibre.live import load_module, Strategy
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cached_mod = load_module('calibre.gui2.store.amazon_live', strategy=Strategy.fast)
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return cached_mod
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def get_method(name):
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return getattr(live_module(), name)
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class AmazonStore:
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@ -24,92 +43,18 @@ class AmazonStore:
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DRM_FREE_TEXT = 'Unlimited'
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FIELD_KEYWORDS = 'k'
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def search_amazon(self, query, max_results=10, timeout=60, write_html_to=None):
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field_keywords = self.FIELD_KEYWORDS
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uquery = self.SEARCH_BASE_QUERY.copy()
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uquery[field_keywords] = query
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def asbytes(x):
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if isinstance(x, type('')):
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x = x.encode('utf-8')
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return x
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uquery = {asbytes(k):asbytes(v) for k, v in uquery.items()}
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url = self.SEARCH_BASE_URL + '?' + urlencode(uquery)
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counter = max_results
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raw = read_url(self.scraper_storage, url, timeout=timeout)
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if write_html_to is not None:
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with open(write_html_to, 'w') as f:
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f.write(raw)
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doc = html.fromstring(raw)
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for result in doc.xpath('//div[contains(@class, "s-result-list")]//div[@data-index and @data-asin]'):
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kformat = ''.join(result.xpath('.//a[contains(text(), "{}")]//text()'.format(self.KINDLE_EDITION)))
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# Even though we are searching digital-text only Amazon will still
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# put in results for non Kindle books (author pages). So we need
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# to explicitly check if the item is a Kindle book and ignore it
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# if it isn't.
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if 'kindle' not in kformat.lower():
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continue
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asin = result.get('data-asin')
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if not asin:
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continue
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cover_url = ''.join(result.xpath('.//img/@src'))
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title = etree.tostring(result.xpath('.//h2')[0], method='text', encoding='unicode')
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adiv = result.xpath('.//div[contains(@class, "a-color-secondary")]')[0]
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aparts = etree.tostring(adiv, method='text', encoding='unicode').split()
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idx = aparts.index(self.BY)
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author = ' '.join(aparts[idx+1:]).split('|')[0].strip()
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price = ''
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for span in result.xpath('.//span[contains(@class, "a-price")]/span[contains(@class, "a-offscreen")]'):
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q = ''.join(span.xpath('./text()'))
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if q:
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price = q
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break
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counter -= 1
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s = SearchResult()
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s.cover_url = cover_url.strip()
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s.title = title.strip()
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s.author = author.strip()
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s.detail_item = asin.strip()
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s.price = price.strip()
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s.formats = 'Kindle'
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yield s
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def get_details_amazon(self, search_result, timeout):
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url = self.DETAILS_URL + search_result.detail_item
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raw = read_url(self.scraper_storage, url, timeout=timeout)
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idata = html.fromstring(raw)
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return self.parse_details_amazon(idata, search_result)
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def parse_details_amazon(self, idata, search_result):
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if idata.xpath('boolean(//div[@class="content"]//li/b[contains(text(), "' +
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self.DRM_SEARCH_TEXT + '")])'):
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if idata.xpath('boolean(//div[@class="content"]//li[contains(., "' +
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self.DRM_FREE_TEXT + '") and contains(b, "' +
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self.DRM_SEARCH_TEXT + '")])'):
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search_result.drm = SearchResult.DRM_UNLOCKED
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else:
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search_result.drm = SearchResult.DRM_UNKNOWN
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else:
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search_result.drm = SearchResult.DRM_LOCKED
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return True
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def open(self, parent=None, detail_item=None, external=False):
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store_link = (self.DETAILS_URL + detail_item) if detail_item else self.STORE_LINK
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store_link = get_method('get_store_link_amazon')(self, detail_item)
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open_url(QUrl(store_link))
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def search(self, query, max_results=10, timeout=60):
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for result in self.search_amazon(query, max_results=max_results, timeout=timeout):
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for result in get_method('search_amazon')(self, query, max_results=max_results, timeout=timeout):
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yield result
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def get_details(self, search_result, timeout):
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return self.get_details_amazon(search_result, timeout)
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return get_method('get_details_amazon')(self, search_result, timeout)
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def develop_plugin(self):
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import sys
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for result in self.search_amazon(' '.join(sys.argv[1:]), write_html_to='/t/amazon.html'):
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for result in get_method('search_amazon')(self, ' '.join(sys.argv[1:]), write_html_to='/t/amazon.html'):
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print(result)
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94
src/calibre/gui2/store/amazon_live.py
Normal file
94
src/calibre/gui2/store/amazon_live.py
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@ -0,0 +1,94 @@
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#!/usr/bin/env python
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# vim:fileencoding=utf-8
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# License: GPL v3 Copyright: 2022, Kovid Goyal <kovid at kovidgoyal.net>
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from lxml import etree, html
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from urllib.parse import urlencode
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from calibre.scraper.simple import read_url
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from calibre.gui2.store.search_result import SearchResult
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module_version = 1 # needed for live updates
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def search_amazon(self, query, max_results=10, timeout=60, write_html_to=None):
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field_keywords = self.FIELD_KEYWORDS
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uquery = self.SEARCH_BASE_QUERY.copy()
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uquery[field_keywords] = query
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def asbytes(x):
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if isinstance(x, type('')):
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x = x.encode('utf-8')
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return x
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uquery = {asbytes(k):asbytes(v) for k, v in uquery.items()}
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url = self.SEARCH_BASE_URL + '?' + urlencode(uquery)
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counter = max_results
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raw = read_url(self.scraper_storage, url, timeout=timeout)
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if write_html_to is not None:
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with open(write_html_to, 'w') as f:
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f.write(raw)
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doc = html.fromstring(raw)
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for result in doc.xpath('//div[contains(@class, "s-result-list")]//div[@data-index and @data-asin]'):
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kformat = ''.join(result.xpath('.//a[contains(text(), "{}")]//text()'.format(self.KINDLE_EDITION)))
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# Even though we are searching digital-text only Amazon will still
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# put in results for non Kindle books (author pages). So we need
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# to explicitly check if the item is a Kindle book and ignore it
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# if it isn't.
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if 'kindle' not in kformat.lower():
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continue
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asin = result.get('data-asin')
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if not asin:
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continue
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cover_url = ''.join(result.xpath('.//img/@src'))
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title = etree.tostring(result.xpath('.//h2')[0], method='text', encoding='unicode')
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adiv = result.xpath('.//div[contains(@class, "a-color-secondary")]')[0]
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aparts = etree.tostring(adiv, method='text', encoding='unicode').split()
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idx = aparts.index(self.BY)
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author = ' '.join(aparts[idx+1:]).split('|')[0].strip()
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price = ''
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for span in result.xpath('.//span[contains(@class, "a-price")]/span[contains(@class, "a-offscreen")]'):
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q = ''.join(span.xpath('./text()'))
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if q:
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price = q
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break
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counter -= 1
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s = SearchResult()
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s.cover_url = cover_url.strip()
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s.title = title.strip()
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s.author = author.strip()
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s.detail_item = asin.strip()
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s.price = price.strip()
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s.formats = 'Kindle'
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yield s
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def parse_details_amazon(self, idata, search_result):
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if idata.xpath('boolean(//div[@class="content"]//li/b[contains(text(), "' +
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self.DRM_SEARCH_TEXT + '")])'):
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if idata.xpath('boolean(//div[@class="content"]//li[contains(., "' +
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self.DRM_FREE_TEXT + '") and contains(b, "' +
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self.DRM_SEARCH_TEXT + '")])'):
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search_result.drm = SearchResult.DRM_UNLOCKED
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else:
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search_result.drm = SearchResult.DRM_UNKNOWN
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else:
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search_result.drm = SearchResult.DRM_LOCKED
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return True
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def get_details_amazon(self, search_result, timeout):
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url = self.DETAILS_URL + search_result.detail_item
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raw = read_url(self.scraper_storage, url, timeout=timeout)
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idata = html.fromstring(raw)
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return parse_details_amazon(self, idata, search_result)
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def get_store_link_amazon(self, detail_item):
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return (self.DETAILS_URL + detail_item) if detail_item else self.STORE_LINK
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@ -50,6 +50,9 @@ class SearchDialog(QDialog, Ui_Dialog):
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self.results_view.model().cover_pool.set_thread_count(self.cover_thread_count)
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self.results_view.model().details_pool.set_thread_count(self.details_thread_count)
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self.results_view.setCursor(Qt.CursorShape.PointingHandCursor)
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# needed for live updates of amazon_live.py
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from calibre.live import start_worker
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start_worker()
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# Check for results and hung threads.
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self.checker = QTimer()
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@ -1187,9 +1187,12 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin, # {{{
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wait_for_cleanup = cleanup_overseers()
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from calibre.db.delete_service import shutdown
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shutdown()
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from calibre.live import async_stop_worker
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wait_for_stop = async_stop_worker()
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time.sleep(2)
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self.istores.join()
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wait_for_cleanup()
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wait_for_stop()
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return True
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def run_wizard(self, *args):
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@ -58,6 +58,12 @@ def stop_worker(timeout=2*DEFAULT_TIMEOUT):
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w.join(timeout)
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def async_stop_worker():
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t = Thread(name='StopLiveDownloadWorker', target=stop_worker, daemon=True)
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t.start()
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return t.join
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def report_failure(full_name):
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print(f'Failed to download live module {full_name}', file=sys.stderr)
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import traceback
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